Lubrication system



April 23, 1963 T. R. THOMAS 3,086,616

` LUBRICATION SYSTEM Filed'July 19, 1960 5 Sheets-Sheet 1 Z 476 @y 50 38 45 j@ J5 39 57 35 C INVENTOR ATTORNEY April 23, 1963 T. R. THOMAS 3,086,616

LUBRCATION SYSTEM Filed July 19, 1960 s sheets-sheet 2 INVENTOR Thomas@ Tqmas ATTORNEY April 23, 1963 T. R. THOMAS LUBRICATION SYSTEM 5 Sheets-Sheet 3 Filed July 19, 1960 INVENTQR 772011105 K. Thoma ATTORNEYS United States Patent O M 3,086,616 LUBRICATION SYSTEM Thomas R. Thomas, New York, N.Y., assignor to Auto Research Corporation, Dover, Del., a corporation of Delaware Filed .luly 19, 1960, Ser.l No. 43,873 2 Claims. (Cl. 184 55) The presen-t invention relates to a lubricating system, and it particularly relates to a centralized lubrication system in which the lubricant is suspended in the form of nely divided particles in a gaseous iluid and then is conducted through a series of conduits or pipes where the suspended particles are separated out as oil droplets and then deposited in the bearing surface or surfaces.

The present application is a continuation-in-part of application Serial No. 657,807, tiled May 8, 1957, now Patent No. 2,954,846, dated October 4, 1960.

This application is particularly directed to the baile construction shown in FIG. 8.

It is among the objects of the present invention to provide a novel centralized suspension lubrication installation of the character above described in which the predetermined quantities of the lubricant will be deposited at various points or at various bearings without regard to their height or remoteness from the central lubricant source and with assurance that all bearings will be adequately lubricated without excess, even though they require relatively minute quantities of lubricant over a predetermined running period.

Another object of the present invention is to provide a novel centralized lubricating installation for feeding lubricant in a line suspension in air in accordance with bearing requirements of a machine or mechanism throughout the operating period of such machine, with assurance Ithat adequate supply without excess will -be supplied to the various bearings throughout operation.

Still further objects and advantages will appear in the more detailed-description set forth below, it beingk understood, however, that thisA more detailed description is given by way of illustration and explanation only and not by way of limitation, since various changes therein may be made by those skilled in the art without departing from the scope and spirit of the present invention.

In accomplishing the above objects according to one embodiment of the present invention, the suspension of lubricant is obtained by compressed air which is fed into the lubricator casing. In the preferred construction, the incoming compressed air is baffled and deected so that moisture will be removed therefrom and -means are provided for collecting the moisture from the air, and it is then conveniently removed from the system.

The air after it has been dehydrated or rendered moisture-free, is caused to pass through a filter and then into a constant pressure chamber, the pressure of which may be maintained by a diaphragm-valve control arrangement. The compressed air after dehydration is caused to pick up oil or lubricant desirable Ifrom or in association with a nozzle arrangement or by an aspirator arrangement which will cause the suspension to form.

The air stream contains minute lubricant particles of varying sizes, but only the liner ones will remain airborne Without causing undesirable wash in the distributing system. Thus the stream from the jet (or nozzle) is directed toward the collector on which the large particles collect and drain back to reservoir, while the very small sized droplets are c-arried out into the lubricant distributing system. Desirably, the size of the suspended particles is of the order of less than .001 inch and they may range from .005 inch to .00'1 inch.

The important feature of the present invention resides 3,086,615 Patented Apr. 23, 1963 in the fact that the carrying gaseous lluid preferably compressed air-is first dehydrated, and then is caused to separate the larger lubricant particles from the fine ones, return the large ones back to the reservoir and carry the tine ones into the distribution system.

At the terminal of the distribution system, the meter units will act on the particles of microscopic size with the result that a predetermined solidiiication condensation and deposition of suspended particles will take place and the proportioned supply to the bearings will take place.

The invention of the present application is particularly directed to thel head which is used for carrying the oil or lubricant reservoir as well as the air dehydrated chamber.

This head is provided with inlets for air under pressure and for liquid lubricant, and there also is provided a single outlet in which the suspension of linely divided lubricant particles in air is fed into a distributing system with the outlets being directed to various bearings or other mechanisms requiring lubricant.

The preferred unit has a mounting means to carry a depending air dehydrated chamber and a lubricant reservoir as well as a chamber in which the inital lubricant suspension in air is processed so as to lose its large particles and pass in-to the distribution system with only very fine suspended particles large, from 5 to 50 microns in size.

This carrier head also is provided with a diaphragm regulating valve to regulate the air pressure and with a solenoid regulated cut oli valve actuated automatically with starting or stopping the machine to cut off -the generation of suspension and supply feed suspension to the distributing system with an intermediate' pressure gauge.

Desirably, the `front of the head is provided with a pressure gauge as well as a liquid iiow gauge to indicate the air pressure as well as the rate of flow of the lubricant into the distributing system.

With the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modiiications can be restorted to which fall within the scope of the claims hereunto appended.

In the dra-wings wherein like reference characters denote corresponding parts throughout the several views:

FIG. l is a diagrammatic system illustrating the applica-tion of the suspension lubricating arrangement of the present invention to a central-ized llubricating installation.

FIG. 2 is a side elevational view partly broken away of the central lubricating source.

FIG. 3 is a top plan view taken upon the line 3 3 of FIG. 2.

FIG. 4 is a transverse fragmentary top sectional view of the head of the lubricator unit of FIG. 2.

FIG. 5 is a side elevational View of the lubricator unit taken from the line 5 5 of FIG. 2.

FIG. 6 is a transverse side sectional view upon the line 6 6 of FIG. 3.

FIG. 7 is a transverse sectional view upon the line 7 7 of FIG. 3.

FIG. 8 is a fragmentary top view partly in section of the top of a suspension generator similar to FIG. 4, showing an alternative form of bafe having a collecting channel at the lower part thereof.

FIG. 9 is a transverse sectional view taken upon the line 9 9 of FIG. 8,7looking upwardly.

Referring to FiG. l, there is shown a main lubricator unit A having the head B with the compressed air filter 3 and dehydrator unit C and the oil reservoir or supply unit D.

The suspension which is generated is fed out through the branch distributing line E to the bearings F, G, H and I` The chamber or units C and D receive the air filter I and the oil filter K.

The head A of the lubricator unit is provided with the pressure gauge L, the drip feedings observation unit M, the adjusting screw N controlling the inlet valve element.

The aspirator nozzle P connects the air chamber C with the lubricant reservoir D.

The lubricant will pass in droplet fashion past the needle valve Q.

The lubricant feed is controlled by needle valve Q and air pressure regulator adjustment N. The solenoid valve unit R opens and closes the supply of air at start and stop of machine respectively.

The collector S controls the size of lubricant particles permitted to enter as an air suspension into the branch distribution system E.

The reservoir is lled through ythe ller T.

Referring to the air inlet system, the air is admitted under suitable compression through an inlet connection to the tapped opening in the side of the head A (see FIGS. 2 and 4). The air then passes through the bore 11 and the vertical passageway 12 into the interior of the transparent cylindrical casing 13 forming part of the air chamber C.

The air fed in through the inlet 10 may be ordinary compressed shop air or it may be some other compressed gaseous uid such as helium or nitrogen depending upon the particular usage or operation of the mechanism.

The air owing down through the opening 12 and into the space 14 in the upper part of the chamber C will strike the circular bale or hood element 15. This hood element has a tapped opening 16 which is screwed upon a threaded sleeve extension 17.

As the air enters lthe chamber C and is baied by the circular baille 15, excess moisture will form in drops which will settle to the bottom 18 of the chamber C.

Any accumulated moisture may be removed through the passages 19 and 20 in the nipple 21'which is mounted on the base 22 of the unit or chamber C.

The petcock 23 will enable any moisture accumulating at 18 to be removed. The petcock when screwed down will permit drainage through the openings 27 and 28, but it will be held against complete removal by means of the resilient extensions or spread ends 29.

The transparent cylinder 13 is clamped between the base 22 and the head A, each having a shallow recess and gasket, such as 24 and 25 in head A.

The nipple 21 which is threaded upon the depending threaded extension 26 will enable the transparent cylinder '13 to be tightly clamped in liquid and airtight fashion between the head A and the base 22.

The threaded extension 26 constitutes the lower end of the central rod 35 which extends upwardly through the coil spring 36, the cylindrical air filter I and the baflie and which is threaded into the head A at 17 It will be noted that the main structural rod 35 in addition to having the passageways 19 and 20 for removal of water, at its lower end will be bored radially at 37 and axially at 38 to provided outlet ow passages for the compressed air after the moisture has been removed and the compressed air has been filtered.

It will be noted that the filter cylinder I is clamped between the inside face 39 of the baille 15 and the base 40 bythe coil spring 36 which presses the base 40 up against the lower end of the cylindrical filter I.

The compressed air which flows through the passageways 37 and 38 will flow into the drilled opening 41 into the chamber 42.

The chamber or pocket 42 receives t-he valve seating element or plunger 43 which rides in the cylinder or recess 44 and is pressed upwardly by means of the spring 45. The steam 46 presses down on the cylinder element l43 under the influence of the adjustable loaded coil spring 47.

The compression on the coil spring 47 may be varied by means of the screw 48 which is locked in position by means of the jamb nut 49.

The flexible diaphragm 60 is clamped into position between the spring `47 and the Itop of `the stem 46, and it forms an upper chamber 61 and a lower chamber 62. The upper chamber 61 is vented to the atmosphere by the small hole 57 at the top of the head A.

The lower chamber `62 is subject to the inlet air pressure in the pocket or chamber 42 as long as the seating or cylindrical element 43 is kept away from the seat 50 at the top of the chamber 42.

The diaphragm 60 in combination with the spring 47 will assure that a uniform air pressure will be maintained in the chamber 62 since when Ithe pressure is too high the diaphragm 60 will be elevated against the spring 47 permitting the valve 43 to close preventing `further flow of air through the pocket or chamber 42.

On the other hand, when the pressure drops in the chamber 62, the diaphragm `60 will be pressed down by the spring 47 moving the valve cylinder 43 downwardly away yfrom the valve seat 50' and permitting iiow of the air from the pocket 42 into the lower chamber 62.

This repetitive opening of Ithe valve seating element 43 with respect to the valve 50 will maintain a constant pressure in the chamber 62. The pressure in the chamber 62 may fbe observed by the gauge L on the outside of the head A. The adjustment of the spring 47 may be so controlled as to give a desired pressure reading on the gauge L.

The chamber 62 communicates through the passageways 63 and 64 (see FIG. 6) with the solenoid valve unit `R. The passageway 64 extends into the solenoid valve chamber 65.

The chamber 65 takes the form of an annular groove which is sealed at :both sides by the O rings 66 and 67 so that the air must flow through the radial passageway 68. The radial passageway 68 leads to a valve seat 69 and a seating element 70. The valve is normally closed by the compression spring 71.

The seating element 70 has a stem or upwardly extending ferrous tube 72, -the upper end of which is threaded at 73 and has a tapped cap 74. This tube extends through the coil 75.

The coil 7S when energized will lift the seating element 70 off its seat 69 allowing air to liiow from the radial passageway 68 into the axial passageway 76 and the radial passageway 77 into the peripheral groove 78 (see FIG. 6).

Escape of air from passageways 77 and groove 78 is prevented by O ring `67 and gasket 79.

The air will then flow through the oblique opening or bore 80 to the annular space 81 around the nozzle structure P.

The nozzle structure P is best shown in FIG. 4, and it consists of a central member and an outside member 91. The air entering the space 81 will pass through the tapered crevice 92 and out of the orice 93 into the chamber 94.

The chamber 94 is divided into two compartments X and Y (see FIG. 4) by the collector S, for the purpose of collecting the larger lubricant particles and letting the fine particles continue into the distributing system, E by the outlet adapter 95. The collector chamber receives the discharge from the nozzle P and the discharge chamber Y, communicates with the outlet 95. The chamber 94 is connected to the distribution system E by the ouelet adapter 95.

The oil or lubricant used is received in the unit D. The unit D has a reservoir 59 made up of a transparent cylinder clamped in position between the gasket 111 in the recess 112 and the base 113 with the gasket 114 by means of the nut 115. The nut 115 is threaded onto the lower threaded end 116 of the central member 117 which extends through lthe unit D. The upper end of the member 117 has a threaded connection at 118l into the head A.

The lower portion of the central member 117 has a lradial opening 119 and the axial opening 120 which communicates with a `drain cock 121 similar to the drain cock 23 for drainage purposes.

`In the transparent cylinder D is the oil filter K which is clamped between the base 122 and the top 123 by means of the spring 124, said spring reacting against its upper end against the disk 125 which is mounted upon the central element 117.

The radial bores 126 and the axial bore 127 communicate with the interior of lthe cylindrical iilter K to receive lubricant within the transparent cylinder 110.

The pressure of air in the reservoir unit D Will force lubricant through the tlter element K and through the passageway 126 and 127 of the central support rod 117.

At the top of the central support -rod 117, the lubricant will pass into the needle valve control pocket 140 which is controlled by means of the needle valve Q. The needle valve Q may be adjusted by means of its head 141 so as to control the flow of lubricant past its seat 142 under the air pressure in the head 94.

This controlled oil flow past the needle valve seat 142 will move through the cross drilling 143 (see FIG. 5) -to the elbow drip iitting 1'44 in the chamber 145 in back of the sight glass 146 forming part of the observation unit M. The window 146 is held in liquid and airtight fashion by the ring 147 in the outside of the chamber 145.

f The position of the needle valve unit Q will be regulated to give a rate of lubricant iiow indicated by the number of drops per unit time from the elbow litting 144.

From the chamber 145, the lubricant will flow through the passageway 148 (see FIG. 3) into the vertical drilled bore 149 v(see FIG. 4) yand then into the horizontal drilled bore 150. The passage 149 is plugged tightly at lower or air chamber end. The lubricant will be drawn from the bore 150 into the central passageways 151 and 15-2 of the linner end of the nozzle P. The oil formed at tip of end 152 will be picked up by the air stream ilowing through passageways 81, 92 and orii'lce 93.

To describe the method of `operation of the device, the air is fed in under pressure through the inlet into the cylindrical transparent container C where it is bafed against the hood element and is expanded so that it will lose its moisture which may be removed from the pet-cock 23.

The lair then passes through the cylindrical li'ilter I and through the passageways 41 into the pocket or chamber 42 under the valve seat 50 and above the rseating element 43. The passageway 41 is tightly plugged :at its outer end so that air can get into pocket 42 only.

The air under pressure will pass into the lower chamber 62 Abelow the diaphragm 60 when the valve or seating element 43 is removed -from the `seat 50 by the stern 46 which is normally presse-d downwardly by the spring 47. The compression on the spring 47 is adjusted by the adjusting screw 48.

With the valve 43 oi its seat 50, the pressure in the chamber or pocket 42 will be the same as the pressure in the chamber 62. However, when the pressure is too high, the diaphragm 60 which on its upper face `61 is exposed to atmospheric pressure through the opening 57 will move upwardly permitting the spring 45 to close the valve 43 against the -seat 50. By this action which may be rapidly repeated, the pressure is maintained in the pocket 42 and the chamber 62 at a predetermined point yas may be set upon the dial L and by adjustment of the hand screw N.

The `air then will pass under pressure from the chamber 62 through the passageway 64 (see FIG. 6) and into the peripheral ygroove 65.

It will then pass into the vertical passageway 76 of FIG. -6 when the solenoid valve is open and thence into the passageway 80 and into the peripheral opening 81 around the nozzle P.

The air after passing through the oblique passageway 92 will exit at orifice 93 -aspirating or drawing lubricant from the central passageway 151 through hole 152. A heavy mixture of the lubricant suspension is discharged into the inlet portion X of chamber 94.

The oil in the meantime is forced by the iair pressure, above the liquid body, -in the reservoir unit D through the filter K, up through the central passageway 127 of the tube 117, past the needle Q Iand into the passageways 148 and 149* (see FIG-S. 3 and 4).

From the passageway 149, the lubricant will be fed into the central passageway 151 of the nozzle fitting P.

The suspension after having been freed of the undesirable heavy particles by the collector S is passed through the adapter ttin-g into the lubricating line E.

The various fittings F, G, H and I at the bearings will serve `as meter units to control the supply to a bearing or other point or part requiring lubrication.

The operation may be automatically started with the starting of the machine by the operation of the solenoid valve R which will open with starting of the machine.

The lubricant air Suspension generating unit will operate automatically once the diaphragm 60 is set for proper constant pressure and the needle valve Q is adjusted suitably for desired amount of lubricant.-

In the embodiment of FIGS. 8 and 9, the various parts shown are of the same construction and operation as in FIGS. 1 7, except that the collector S has been modified so that as indicated at 200, it is held in position by the fla-nge 201 and screw 202, and it has la gutter 203 which extends across the chamber but reaches it-s maximum elevation at 204 and then goes downwardly .at each end as indicated at 205.

The central portion of the gutter 203 has an opening there in through Iwhich extends the tubular member 117. The adjustable needle valve 207 has a lister slot 208 accessible in the recess 209.

The recess is closed by means of a stub screw 210 and adjustment is only possible when the `stub screw 210* is removed. l

The outlet 211, of the suspension, as indicated by the arrow 212, is slightly larger than -as shown in FIG. 4 and has an internal collar portion 213, as well as a hexagon outside portion 214.

The aspirator nozzle P may be of the ysame construction as is described in connection with FIG. 4, as are also the filter unit C and the supply unit D.

The gutter 203 will take off any condensation or drippage created by the contact of the stream of nely divided oil against the collector 200.

Although the collector plates S and 200 are shown as solid collector plates, they may also be made of perforate meta-l or even of very ne wire mesh screening. These collectors will contact the stream -from the jet P and the large particles of oil will collect thereon and drain back into the reservoir D.

The collector plates S and 200, 225 are .arranged so as to extend completely across the stream passage and to partition the domed chamber above the lubricant reservoir both transversely and vertically so that the stream is diverted downwardly and passes under the collector without dividing the stream.

If desired, these collector plates may be cast solid in the head above the chamber D or they can be vertical plates with a gutter, as shown in FIGS. 8 or 9, and may be adjustable.

The suspension owing ou-t through the outlet of FIG. 4 or 211 of FIG. 8 will pass through tubing or piping until it meets the meter units which are associated with the bearings to be lubricated.

For plain bearings, a simple meter unit may be em- `aosaeie lployed which will change the suspension to droplets 'of a size which will readily deposit on a plain bearing so that very little of the oil content 'remains in oil suspension form and so that there is very little loss of oil or contamination of the surrounding air as the air escapes lfrom a bearing.

It is necessary for the suspension generated and sup'- plied through the outlet 95 of FIG. 4 and 211 of FIG. 8 to 'upon gears and other similar types of contact bearing structures where it is not possible to get a tubing structure direct to the point of lubrication.

These outlet fittings may have pointed extensions or directors to direct the spray toward the lubricating point. The outlet fittings may Aalso be employed to lubricate high speed ball or roller bearings in which at the outlet of the piping system there will be provided a plain hole in `a fitting with pointed nose Aso that the suspension may be directly applied to the bearings to give the preferred form of lubrication.

The air lubric-ant suspension lubricating systems of the character described in the present application, the prelferred tubing may have an O.D. dimesion of for the main line and an O.D. dimension of 1A" for the branch lines.

All of these outlet meter units should have filters and valves and a typical fitting may have a felt filter and screen, a pin an'd a disk valve as shown, for example, in

Pat. 1,948,503.

At low flow rates, the disk valve may be replaced by a ball valve. In some instances, a filter may be omitted, leaving only the screen cup and in other instances, the pin may be omitted leaving an open hole, but otherwise, the fitting as shown in Pat. 1,948,503 will be satisfactory.

The embodiment of my invention shown and described herein is to be considered merely as illustrative, as my invention is susceptible to variation, modification and change within the spirit and scope of the appended claims.

Having now particularly described and ascertained the nature of the invention, and in what manner the same is to be performed, what is claimed is:

l. A mist lubrication system-comprising asubstantially rectangular head having a bottom, separate air dehydrator and lubricant reservoir receptacles fixed to and depending from said bottom, acompressed air inlet to saidhead communicating with said air dehydrator receptacle, a mist chamber in said head communicating with said lubricant reservoir receptacle, a mist outlet in said head communieating with said mist chamber, an air conduit having an inlet and an outlet, said air conduit inlet being in said air dehydrator receptacle, said air conduit outlet being in said head, a lubricant Iconduit having an inlet and an outlet, said lubricant conduit inlet being in said lubricant reservoir receptacle and said lubricant conduit vbeing in said head, filter means surrounding said air and lubricant conduit inlets respectively, a mist generating nozzle having a central passageway, an annular passageway and a nozzle outlet, said nozzle outlet communicating with said mist chamber at a point remote from said mist outlet, air passageways in said head establishing communication between said air conduit outlet and said annular passageway, an adjustable constant pressure diaphragm valve, a pressure gauge and a solenoid valve operatively positioned in said air passageways, lubricant passageways in said head establishing communication between said lubricant conduit outlet and said central passageway, an adjustable lubricant flow needle valve in said lubricant passageways adjacent said outlet of said lubricant conduit, and a at bafiie extending across the entire Width of said mist chamber between said nozzle outlet and said mist outlet and extending downwardly across the entire depth of rsaid mist chamber and intova portion of said lubricant reservoir receptacle.

2. A mist lubrication system in accordance with claim `1, wherein said fiat baffle has a bottom end with an upturned gutter.

References Cited in the file of this patent UNITED STATES PATENTS 1,990,524 Bystricky Feb. 12, 1935 2,661,814 Norgren Dec. 8, .1953 2,719,604 Allen Oct. 4, 1955 2,776,025 Schweisthal Jan. '1, 1957 2,868,584 lFaust Jan. 13, 1959 2,887,181 Dillon May 19, 1959 2,913,234 Beaurline Nov. 17, 1959 FOREIGN PATENTS 1,188,352 France Mar. 9, 1959 

1. A MIST LUBRICATION SYSTEM COMPRISING A SUBSTANTIALLY RECTANGULAR HEAD HAVING A BOTTOM, SEPARATE AIR DEHYDRATOR AND LUBRICANT RESERVOIR RECEPTACLES FIXED TO AND DEPENDING FROM SAID BOTTOM, A COMPRESSED AIR INLET TO SAID HEAD COMMUNICATING WITH SAID AIR DEHYDRATOR RECEPTACLE, A MIST CHAMBER IN SAID HEAD COMMUNICATING WITH SAID LUBRICANT RESEVOIR RECEPTACLE, A MIST OUTLET IN SAID HEAD COMMUNICATING WITH SAID MIST CHAMBER, AN AIR CONDUIT HAVING AN INLET AND AN OUTLET, SAID AIR CONDUIT INLET BEING IN SAID AIR DEHYDRATOR RECEPTACLE, SAID AIR CONDUIT OUTLET BEING IN SAID HEAD, A LUBRICANT CONDUIT HAVING AN INLET AND AN OUTLET, SAID LUBRICANT CONDUIT INLET BEING IN SAID LUBRICANT RESERVOIR RECEPTACLE AND SAID LUBRICANT CONDUIT BEING IN SAID HEAD, FILTER MEANS SURROUDING SAID AIR AND LUBRICANT CONDUIT INLETS RESPECTIVELY, A MIST GENERATING NOZZLE HAVING A CENTRAL PASSAGEWAY, AN ANNULAR PASSAGEWAY AND A NOZZLE OUTLET, SAID NOZZLE OUTLET COMMUNICATING WITH SAID MIST CHAMBER AT A POINT REMOTE FROM SAID MIST OUTLET, AIR PASSAGEWAYS IN SAID HEAD ESTABLISHING COMMUNICATION BETWEEN SAID AIR CONDUIT OUTLET AND SAID ANNULAR PASSAGEWAY, AN ADJUSTABLE CONSTANT PRESSURE DIAPHRAGM VALVE, A PRESSURE GAUGE AND A SOLENOID VALVE OPERATIVELY POSITIONED IN SAID AIR PASSAGEWAYS, LUBRICANT PASSAGEWAYS IN SAID HEAD ESTABLISHING COMMUNICATION BETWEEN SAID LUBRICANT CONDUIT OUTLET AND SAID CENTRAL PASSAGEWAY, AN ADJUSTABLE LUBRICANT FLOW NEEDLE VALVE IN SAID LUBRICANT PASSAGEWAYS ADJACENT SAID OUTLET OF SAID LUBRICANT CONDUIT, AND A FLAT BAFFLE EXTENDING ACROSS THE ENTIRE WIDTH OF SAID MIST CHAMBER BETWEEN SAID NOZZLE OUTLET AND SAID MIST OUTLET AND EXTENDING DOWNWARDLY ACROSS THE ENTIRE DEPTH OF SAID MIST CHAMBER AND INTO A PORTION OF SAID LUBRICANT RESERVOIR RECEPTACLE. 